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Finding the Fourth Proportional to 435,636.60, 653,487.30 and 155,117.40

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Solution

The fourth proportional to 435,636.60, 653,487.30 and 155,117.40 is: 232,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,636.60 : 653,487.30 = 155,117.40 : x
  2. Step 2: Convert to fraction form
    435,636.60/653,487.30 = 155,117.40/x
  3. Step 3: Cross multiply
    435,636.60x = 653,487.30 × 155,117.40
  4. Step 4: Simplify right side
    435,636.60x = 101,367,250,909.02
  5. Step 5: Solve for x
    x = 101,367,250,909.02/435,636.60
  6. Step 6: Final answer
    x = 232,687.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.